Technical requirements for automatically switched optical network management
- Part 2: NMS system function
1 Scope
This part of the standard specifies the management scope, technical requirements and system function requirements for the network management system (NMS) of automatically switched optical network (ASON).
This part is applicable to the ASON NMS.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document applies.
GB/T 21645.1-2008 Technical requirements for automatically switched optical network - Part 1: Architecture and general requirements
YD/T 1289.3-2003 Synchronous digital hierarchy (SDH) transport network management system technical specification part 3: Network management system (NMS) function
YD/T 1767.1-2008 Technical requirements for automatically switched optical network management - Part 1: Basic principle
3 Terms and abbreviations
3.1 Terms
For the purposes of this document, the terms and definitions established in GB/T 21645.1 and YD/T 1289.3-2003 and the following apply.
3.1.1
network management system (NMS)
ASON NMS, namely, a software and hardware system used to manage ASON, which provides an end-to-end network view of the whole network, and is able to manage ASON elements or subnetworks in multi-device vendors and multi-control domain environments in the network
3.1.2
element management system (EMS)
ASON EMS, namely, a software and hardware system used to manage one or more ASON elements, which manages ASON elements or subnetworks provided by a single equipment vendor
Note: The EMS given in this part refers to the element management system and subnetwork management system collectively in the traditional sense.
3.1.3
name
unique and immutable identifier of a managed object in the EMS or NMS management domain
3.1.4
user label
user-friendly name that can be configured for a managed object, an attribute which can, in an EMS, be initially set as the local name of the EMS, and which can be managed and assigned by the NMS
3.1.5
layered SNPP
group of SNPPs with the same layer rate
3.1.6
layered SNPP link
SNPP link at a specific layer rate
3.1.7
multilayer routing area (MLRA)
multilayer routing area (MLRA) which is composed of one or more routing areas in a control plane. Each routing area corresponds to a supported layer rate. An MLRA contains a plurality of subordinate MLRAs interconnected by SNPP links. Each MLRA can in turn contain corresponding subordinate MLRAs, the subordinate RAs are completely contained in their superior RAs, and the smallest MLRA contains one routing node. The MLRA forms a hierarchical structure through this inclusion relationship. The division of MLRAs is determined by EMS
In this part, three levels of MLRA are supported: top-level MLRAs (corresponding to the entire ASON managed by a control plane), intermediate-level MLRAs and routing nodes [corresponding to management elements (MEs)]. In a network without control planes, an MLRA contains 0 or more multilayer subnetworks (MLSN) and supports the provision of connections across multiple MLSNs.
3.1.8
multilayer SNPP (MLSNPP)
set of layered SNPPs, with each layer rate corresponding to a layered SNPP
3.1.9
multilayer SNPP link (MLSNPP link)
collection of SNPP links of control planes in different layer networks, wherein multilayers do not represent client-server relationships, but rather multiple layer rates that are flexibly mapped to the same switching hierarchy
3.1.10
diversity
network resources (links and nodes) with multiple parallel connections for different usage between a pair of input and output ports, which may be classified into different types depending on factors such as links, nodes or management policies: node-unrelated diversities (with separated nodes) if two connections do not share any nodes other than the ingress and egress nodes; link-unrelated diversities (with separated links) if the routes of two connections do not share any links
Foreword II
1 Scope
2 Normative references
3 Terms and abbreviations
3.1 Terms
3.2 Abbreviations
4 ASON NMS management scope
5 Technical requirements
5.1 General requirements for the system
6 Requirements for system management functions
6.1 Use case
6.2 Transport plane management functions
6.3 Control plane management functions
6.4 Signaling communications network (SCN) management
Annex A (Informative) Schematic diagram for hierarchical relationship of MLRA
自动交换光网络(ASON)网络管理技术要求
第2部分：NMS系统管理功能
1 范围
本部分规定了自动交换光网络(ASON)网络管理系统(NMS)的管理范围、技术要求和系统功能要求。
本部分适用于ASON网络管理系统。
2 规范性引用文件
下列文件中的条款通过本部分的引用而成为本部分的条款。凡是注日期的引用文件，其随后所有的修改单(不包括勘误的内容)或修订版均不适用于本部分，然而，鼓励根据本部分达成协议的各方研究是否可使用这些文件的最新版本。凡是不注日期的引用文件，其最新版本适用于本部分。
GB/T 21645.1-2008 自动交换光网络(ASON)技术要求 第1部分：体系结构与总体要求
YD/T 1289.3-2003 同步数字体系(SDH)传送网网络管理技术要求 第3部分：NMS系统管理功能
YD/T 1767.1-2008 自动交换光网络(ASON)网络管理技术要求 第1部分：基本原则
3 术语和缩略语
3.1 术语
GB/T 21645.1和YD/T 1289.3-2003界定的以及下列术语和定义适用于本文件。
3.1.1
网络管理系统 Network Management System (NMS)
ASON网络管理系统，即为了管理ASON网络所使用的软硬件系统。网络管理系统提供全网的端到端网络视图，能够管理网络内多设备供应商、多控制域环境的ASON网元或子网。
3.1.2
网元管理系统 Element Management System (EMS)
ASON网元管理系统，即为了管理一个或多个ASON网元所使用的软硬件系统。网元管理系统管理由单一设备供应商提供的ASON网元或子网。
注：本部分中的网元管理系统是传统意义上的网元管理系统和子网管理系统的统称。
3.1.3
名称 Name
在EMS和NMS管理域中，管理对象的唯一和不可变标识。
3.1.4
用户标签 User Label
管理对象可配置的用户友好名称。EMS可以将该属性初始设置为EMS的本地名称。该属性可以被NMS管理和指配。
3.1.5
分层SNPP Layered SNPP
一组层速率相同的SNPP。
3.1.6
分层SNPP链路 Layered SNPP Link
特定层速率的SNPP链路。
3.1.7
多层路由区 Multilayer Routing Area (MLRA)
在控制平面中，一个多层路由区(MLRA)由一个或多个路由区组成，每一个路由区对应一种所支持的层速率。一个MLRA包含由SNPP链路互联的多个下级MLRA。MLRA可以循环地包含下级MLRA，下级路由区被完全包含在上级路由区之内，最小的MLRA是一个路由节点。MLRA通过这种包含关系构成分级结构。MLRA的划分由EMS来决定。
在本部分中，支持3个级别的MLRA：顶级MLRA(对应由一个控制平面所管理的整个ASON网络)、中间级MLRA和路由节点(对应于管理单元(ME))。在没有控制平面网络中，MLRA包含0或多个多层子网(MLSN)，并支持跨越多个MLSN提供连接。
3.1.8
多层子网点池 Multilayer SNPP (MLSNPP)
表示一组分层SNPP，每个层速率对应一个分层SNPP。
3.1.9
多层SNPP链路 Multilayer SNPP Link (MLSNPP链路)
不同层网络中的控制平面SNPP链路的集合。其中的多层并不代表客户服务器关系，而是灵活映射到相同交换层次的多种层速率。
3.1.10
分集 Diversity
在一对输入和输出端口之间的多个并行连接使用不同的网络资源(链路和节点)。根据链路、节点或管理策略等因素，分集可以有不同的类型：若两个连接除了入口和出口节点外，不共享任何节点，称之为节点不相关分集(节点分离)；如果两个连接的路由不共享任何链路，称之为链路不相关分集(链路分离)。
3.1.11
共享风险组 Shared risk Group (SRG)
为了准确描述路由分集，定义共享风险组概念。SRG是指共享相同的风险的一组资源，其中一个资源的故障同时会引起组中所有资源的故障。SRG包含两种类型：节点类型SRG是指共享相同风险的一组节点；链路类型SRG也称为共享风险链路组(SRLG)，是指共享相同风险的一组链路，一条链路可以分别属于多个不同的SRLG。
3.1.12
路由组 Route Group
用于为呼叫中的连接提供分集。对于呼叫中要求路由分离的多个连接，采用不同的路由组标识；对于呼叫中要求采用相同路由的多条连接，采用相同的路由组标识。通过修改呼叫中已有连接的路由组标识，可以改变连接的分集的属性。
3.2
缩略语
下列缩略语适用于本文件。
ASON Automatically Switched Optical Network 自动交换光网络
CCID Control Channel Identifier 控制通道标识
CTP Connection Termination Point 连接终端点
DCN Data Communication Network 数据通信网
EMS Element Management System 网元管理系统
E-NNI External Network-Network Interface (Reference Point) 外部网络-网络接口(参考点)
I-NNI Internal Network-Network Interface (Reference Point) 内部网络-网络接口(参考点)
Inter E-NNI Inter External Network Node Interface 外部E-NNI (E-NNI两个端点位于不同运营商内)
